Basic electrical engineering pdf

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Students also viewed • Module II • Module I - Note of Basic Electrical Engineering 2018-2020 • Module V - Note of Basic Electrical Engineering 2018-2020 • Module III - Note of Basic Electrical Engineering 2018-2020 • Module IV - Note of Basic Electrical Engineering 2018-2020 • Electric and hybrid vehicles BASIC ELECTRICAL ENGINEERING : MODULE - 1 I. DC CIRCUITS : Syllabus : Ohm's law, Kirchhoff's laws, analysis of series, parallel & series parallel circuits excited by independent voltage sources, power & energy, examples. Ohm's law : " The potential difference between the two ends of a conductor is directly proportional to the current flowing through it, provided its temperature & other parameters remain unchanged ". V α I V = R I R - Constant of proportionality called Resistance V - voltage in volts I - current in Amps R - resistance in Ohms (Ω) Limitations of Ohm's law : • It is not applicable to non-metallic conductors like silicon carbide. Their v-i relationship is given by , [ V= K Im ] - Here the relation between V & I is non linear. (m< 1) • It is not applicable to non-linear devices like diodes. • It is not applicable to 'arc lamps', because arc produced exhibits non-linear characteristics. Kirchhoff's laws :- I. Kirchhoff's current law [ KCL ] - " Algebraic sum of all currents meeting at a node is zero in any electric circuit" OR " Sum of all currents entering a node is equal to sum of all currents leaving a node in any electrical circuit." V I KCL is illustrated ...

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